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Behavior of high-strength concrete I-beams with low shear reinforcement

机译:低剪切增强高强混凝土工字钢的性能

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An experimental investigation was carried out on a total of 10 simply supported I-beams-containing low shear reinforcement ratios. These included four reinforced concrete(RC)and six prestressed Concrete(PSC)beams with concrete strengths ranging from 40 to 100 MPa. Test results indicate that after critical diagonal cracking formation of arch action in RC beams provides sufficient reserve shear strength if adequate tension steel is provided. In contract, due to its higher cracking load that approaches the arch action capacity, the reserve strength of PSC beams depends on the discrete number of the stirrups intercepted by the inclined crack.
机译:对总共10个含有I型梁的低剪切增强比的简单研究进行了实验研究。其中包括四根钢筋混凝土(RC)和六根预应力混凝土(PSC)梁,混凝土强度范围为40至100 MPa。测试结果表明,如果提供了足够的抗拉强度钢,则在钢筋混凝土梁的关键斜向裂缝开裂之后,拱形作用会提供足够的储备剪切强度。合同中,由于其较高的开裂载荷接近拱效应,PSC梁的储备强度取决于倾斜裂缝所截取的箍筋的离散数量。

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